Vulnerability-Lookup

CNVD-2026-37854

Vulnerability from cnvd - Published: 2026-09-15

Title

free5GC越界切片访问漏洞

Description

free5GC是一个‌开源的5G核心网项目‌，由Linux基金会托管，主要用来实现3GPP标准里定义的5G核心网络功能。 free5GC存在越界切片访问漏洞，该漏洞源于CHF nchf-convergedcharging服务存在越界切片访问，通过向PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...`发送经过认证的有效请求，攻击者可利用该漏洞导致拒绝服务。

Severity

中

Patch Name

free5GC越界切片访问漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级程序修复该安全问题，详情见厂商官网: https://github.com/free5gc/chf/releases

Reference

https://github.com/free5gc/free5gc/security/advisories/GHSA-6g43-577r-wf4x https://github.com/free5gc/free5gc/issues/864 https://github.com/free5gc/chf/pull/61 https://github.com/free5gc/chf/commit/55af766f321a00afa978e806548c96f8a7d2433e

Impacted products

Name
free5GC chf <1.2.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-32937",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-32937"
    }
  },
  "description": "free5GC\u662f\u4e00\u4e2a\u200c\u5f00\u6e90\u76845G\u6838\u5fc3\u7f51\u9879\u76ee\u200c\uff0c\u7531Linux\u57fa\u91d1\u4f1a\u6258\u7ba1\uff0c\u4e3b\u8981\u7528\u6765\u5b9e\u73b03GPP\u6807\u51c6\u91cc\u5b9a\u4e49\u76845G\u6838\u5fc3\u7f51\u7edc\u529f\u80fd\u3002\n\nfree5GC\u5b58\u5728\u8d8a\u754c\u5207\u7247\u8bbf\u95ee\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eCHF nchf-convergedcharging\u670d\u52a1\u5b58\u5728\u8d8a\u754c\u5207\u7247\u8bbf\u95ee\uff0c\u901a\u8fc7\u5411PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...`\u53d1\u9001\u7ecf\u8fc7\u8ba4\u8bc1\u7684\u6709\u6548\u8bf7\u6c42\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u7a0b\u5e8f\u4fee\u590d\u8be5\u5b89\u5168\u95ee\u9898\uff0c\u8be6\u60c5\u89c1\u5382\u5546\u5b98\u7f51:\r\nhttps://github.com/free5gc/chf/releases",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-37854",
  "openTime": "2026-09-15",
  "patchDescription": "free5GC\u662f\u4e00\u4e2a\u200c\u5f00\u6e90\u76845G\u6838\u5fc3\u7f51\u9879\u76ee\u200c\uff0c\u7531Linux\u57fa\u91d1\u4f1a\u6258\u7ba1\uff0c\u4e3b\u8981\u7528\u6765\u5b9e\u73b03GPP\u6807\u51c6\u91cc\u5b9a\u4e49\u76845G\u6838\u5fc3\u7f51\u7edc\u529f\u80fd\u3002\r\n\r\nfree5GC\u5b58\u5728\u8d8a\u754c\u5207\u7247\u8bbf\u95ee\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eCHF nchf-convergedcharging\u670d\u52a1\u5b58\u5728\u8d8a\u754c\u5207\u7247\u8bbf\u95ee\uff0c\u901a\u8fc7\u5411PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...`\u53d1\u9001\u7ecf\u8fc7\u8ba4\u8bc1\u7684\u6709\u6548\u8bf7\u6c42\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "free5GC\u8d8a\u754c\u5207\u7247\u8bbf\u95ee\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "free5GC chf \u003c1.2.2"
  },
  "referenceLink": "https://github.com/free5gc/free5gc/security/advisories/GHSA-6g43-577r-wf4x\r\nhttps://github.com/free5gc/free5gc/issues/864\r\nhttps://github.com/free5gc/chf/pull/61\r\nhttps://github.com/free5gc/chf/commit/55af766f321a00afa978e806548c96f8a7d2433e",
  "serverity": "\u4e2d",
  "submitTime": "2026-03-24",
  "title": "free5GC\u8d8a\u754c\u5207\u7247\u8bbf\u95ee\u6f0f\u6d1e"
}

CVE-2026-32937 (GCVE-0-2026-32937)

Vulnerability from cvelistv5 – Published: 2026-03-20 02:43 – Updated: 2026-03-20 19:56

Title

free5GC CHF has Out-of-Bounds Slice Access that Leads to DoS

Summary

free5GC is an open source 5G core network. free5GC CHF prior to version 1.2.2 has an out-of-bounds slice access vulnerability in the CHF `nchf-convergedcharging` service. A valid authenticated request to PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...` can trigger a server-side panic in `github.com/free5gc/chf/internal/sbi.(*Server).RechargePut(...)` due to an out-of-range slice access. In the reported runtime, Gin recovery converts the panic into HTTP 500, but the recharge path remains remotely panic-triggerable and can be abused repeatedly to degrade recharge functionality and flood logs. In deployments without equivalent recovery handling, this panic may cause more severe service disruption. free5GC CHF patches the issue. Some workarounds are available: Restrict access to the `nchf-convergedcharging` recharge endpoint to strictly trusted NF callers only; apply rate limiting or network ACLs in front of the CHF SBI interface to reduce repeated panic-trigger attempts; if the recharge API is not required, temporarily disable or block external reachability to this route; and/or ensure panic recovery, monitoring, and alerting are enabled.

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-20 19:55 UTC

CWE

CWE-129 - Improper Validation of Array Index

Assigner

GitHub_M mitre root Scorecard

References

4 references

URL	Tags
https://github.com/free5gc/free5gc/security/advis…	x_refsource_CONFIRM
https://github.com/free5gc/free5gc/issues/864	x_refsource_MISC
https://github.com/free5gc/chf/pull/61	x_refsource_MISC
https://github.com/free5gc/chf/commit/55af766f321…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
free5gc	chf	Affected: < 1.2.2

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-32937",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-20T19:55:24.210377Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-20T19:56:21.132Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "chf",
          "vendor": "free5gc",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "free5GC is an open source 5G core network. free5GC CHF prior to version 1.2.2 has an out-of-bounds slice access vulnerability in the CHF `nchf-convergedcharging` service. A valid authenticated request to PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...` can trigger a server-side panic in `github.com/free5gc/chf/internal/sbi.(*Server).RechargePut(...)` due to an out-of-range slice access. In the reported runtime, Gin recovery converts the panic into HTTP 500, but the recharge path remains remotely panic-triggerable and can be abused repeatedly to degrade recharge functionality and flood logs. In deployments without equivalent recovery handling, this panic may cause more severe service disruption. free5GC CHF patches the issue. Some workarounds are available: Restrict access to the `nchf-convergedcharging` recharge endpoint to strictly trusted NF callers only; apply rate limiting or network ACLs in front of the CHF SBI interface to reduce repeated panic-trigger attempts; if the recharge API is not required, temporarily disable or block external reachability to this route; and/or ensure panic recovery, monitoring, and alerting are enabled."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-129",
              "description": "CWE-129: Improper Validation of Array Index",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-20T02:43:18.754Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/free5gc/free5gc/security/advisories/GHSA-6g43-577r-wf4x",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/free5gc/free5gc/security/advisories/GHSA-6g43-577r-wf4x"
        },
        {
          "name": "https://github.com/free5gc/free5gc/issues/864",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/free5gc/free5gc/issues/864"
        },
        {
          "name": "https://github.com/free5gc/chf/pull/61",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/free5gc/chf/pull/61"
        },
        {
          "name": "https://github.com/free5gc/chf/commit/55af766f321a00afa978e806548c96f8a7d2433e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/free5gc/chf/commit/55af766f321a00afa978e806548c96f8a7d2433e"
        }
      ],
      "source": {
        "advisory": "GHSA-6g43-577r-wf4x",
        "discovery": "UNKNOWN"
      },
      "title": "free5GC CHF has Out-of-Bounds Slice Access that Leads to DoS"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-32937",
    "datePublished": "2026-03-20T02:43:18.754Z",
    "dateReserved": "2026-03-17T00:05:53.282Z",
    "dateUpdated": "2026-03-20T19:56:21.132Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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CNVD-2026-37854

CVE-2026-32937 (GCVE-0-2026-32937)

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